Separable rim for automobile-wheels.



W. M. WIRTH.

SEPARABLB RIM FOR AUTOMOBILE WHEELS.

APPLICATION FILED AUG. 19, 1912.

1 076 73Q Patented Oct. 28, 1913.

" inverse.

. Application filed August 19, 1912. Serial no. 715,830.

at all whom it may concern.

umirnn 'srarnspra 'rnnr ormon WILLIAM MI. wrarnt, or eat. tours, MISSOURI.

SEPARAHLE RIM FOR AUTOMOBILE-WHEELS.

Be it-known that I WILLIAM M. WIR'IH, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and usefullmprovements in Sepa 'rable Rims for Automobile-metals, of

which. the following is a specification containing a full, clear, and onset description,

- reference being had to the accompanying drawings, forming-a part thereof.

My invention relates to an improved separable rim for automobile wheels, and consistsv in the novel construction hereinafter described and particularly designated in the appended claim.

The object of my invention is to provide an improved separable rim for automobile wheels. whereby the operation of applying and detaching a tire may performed in the least possible time.

: Af further object is to provide an improvedseparable'rim for automobile wheels, which will be very strong, eliicient and durable.

In the drawings 2" Figure 1 is a side elevalion of an automobile wheel and tire having my inyention applied thereto; Fig. 2 is a sectional end elevation, the section being taken onthe lineQ -Q of Fig. 1; Fig. 3 is a parts, .viz., a separable base rim, the quickdetachable section of which is connected to the fixed section by what I term interrupted screw threads or inclined slots, the Walls of which are engaged by lugs or pins.

Both the base rim and the outer :rim; may be used together, as herein shown, or they may he need separately, as will. be obvious to workmen skilled in the art, the numerals 1, 2 and 3 indicating respectively the hub, spokes and folly of a common automobile wheel, on which. is fixed in the usual way a fixed section 4 of the base rim. This section 4. is in the form of a ring, and is provided upon its periphery at its inner marginal Specification of Letters Patent.

Patented Oct. 28, 1913.

edge with a symmetrical series of radial lugs,.p1ns or other projections 5, which extend outwardly a short distance from the outer periphery said fixed section, to be engaged by the walls of a corresponding symmetrical series of inclined slots 6 formed in the inner edge of the mating separable section T for the purpose of securing the sections together and permitting the said separable section to be quickly attached and detached by a short rotary or rocking movenjcnt' of the said separable section 7. The said slots 6, it will be seen, interrupt the continuity of the inner marginal edge of said separable section 7, and thus act as guides in placing the slots over the pins. The said fixed base section 4: isprovided with the usual openings, such as 8, through which passes the valve. stem.

To prevent creeping of the base section 4, the outer periphery of the same is provided with a pair of lugs or projections 10, between which an angular base 11 carried by the valve stem 9 is mounted. The said projections 10 also prevent the valve stem and tire lugs from turning. but onepair of the lugs 10, but it is evident that numerous pairs of the same may be made use oi.

The fixed base section 4 and the separable section 7 are in use, telescopically mounted one upon the other. In the present instance, as shown, I have mounted the separable section 7 upon the outer periphery of the said base section l. The said base sections is provided with an inwardly extending reccss 12, in which are a series of teeth or a toothed rack 13, and the said separable sec tion 7 is provided with a. corresponding series of teeth 14 at a point, directly opposite said recess 12. A suitable key or tool 15 has a handle 16 at one end and a pinion 17 at its opposite end,- said pinion being adapted to simultaneously engage the opposite teeth of the two racks during the operation of attaching or detaching said section 7. 18 indicates a locking plate which is provided near its upper edge with a series of inwardly projecting teeth. 19, for engaging the teeth is of the said detachable section 7, and the ends of the said locking plate are provided with perforations 20, through which pass screws or bolts 21, to secure raid plate in position upon the side of the folly 3. Tlhe'shape of the outer marginal edges of the said base section 1 and detachable see- I have described Y tion 7 may be altered by a skilled mechanic to any common shape of rim margin now in use, such, for instance, as that which is. I known as clencher tire casing 22 may be located upon clencher, and then the usual the base rim without the intervention of any sort of demountable rim, thus making use of only the separable rim portion of my invention.

detail in Fig. 6. Referring again to the base section, the said sections 4 and 7 .are

secured to ther and disconnected by means of a relatively rocking movement similar to that of an ordinary nut on a threaded bolt.

toothed-rack in said recess, an

What I claim is the following: 1he improved separable P l g ring, a series of radial pinsfixed upon the puter'peripher; of saidwsection atthe inner mar thereo a separable section also in theorm 'of aring having in its inner marginal edge' a series of inclined slots which interrupt said edge and act as placingguides, said base. section being provided with an inwardly extending races, a a seriesof teeth onjsaid separable section at a, directly opposite said recess; i

' In testimony whereof, I have signedzmy name to this specification, in presence of we subscribing witnesses.

WILLIAM M.

' Witnesses:

E. L. WALLACE, J0me C.

tire rim, core, a fixed section inthe form of a: 35 

